Terra Codex
// the open codex of terraria
// Pre-Hardmode event

Old One's Army

Trigger
Place an Eternia Crystal on an Eternia Crystal Stand (purchased from the Tavernkeep).
Duration
5–7 waves depending on tier
Spawn changes
Etherian goblins, kobolds, javelin throwers, lightning bugs, dark mages, ogres, and Betsy (T3 only) spawn from portals.
Rewards
Defender Medals → Squire/Apprentice/Huntress/Monk armor sets, sentry weapons, pets.

Enemies during the Old One's Army · 30

{$NPCName.DD2DarkMageT1} {$NPCName.DD2DarkMageT1}{$NPCName.DD2DrakinT2} {$NPCName.DD2DrakinT2}{$NPCName.DD2GoblinBomberT1} {$NPCName.DD2GoblinBomberT1}{$NPCName.DD2GoblinBomberT1} {$NPCName.DD2GoblinBomberT1}{$NPCName.DD2GoblinT1} {$NPCName.DD2GoblinT1}{$NPCName.DD2GoblinT1} {$NPCName.DD2GoblinT1}{$NPCName.DD2JavelinstT1} {$NPCName.DD2JavelinstT1}{$NPCName.DD2JavelinstT1} {$NPCName.DD2JavelinstT1}{$NPCName.DD2KoboldFlyerT2} {$NPCName.DD2KoboldFlyerT2}{$NPCName.DD2KoboldWalkerT2} {$NPCName.DD2KoboldWalkerT2}{$NPCName.DD2OgreT2} {$NPCName.DD2OgreT2}{$NPCName.DD2SkeletonT1} {$NPCName.DD2SkeletonT1}{$NPCName.DD2WitherBeastT2} {$NPCName.DD2WitherBeastT2}{$NPCName.DD2WyvernT1} {$NPCName.DD2WyvernT1}{$NPCName.DD2WyvernT1} {$NPCName.DD2WyvernT1}Betsy BetsyDark Mage Dark MageDrakin DrakinEternia Crystal Eternia CrystalEtherian Goblin Etherian GoblinEtherian Goblin Bomber Etherian Goblin BomberEtherian Javelin Thrower Etherian Javelin ThrowerEtherian Lightning Bug Etherian Lightning BugEtherian Wyvern Etherian WyvernKobold KoboldKobold Glider Kobold GliderMysterious Portal Mysterious PortalOgre OgreOld One's Skeleton Old One's SkeletonWither Beast Wither Beast

Frequently asked

How do you start a Old One's Army in Terraria?

Place an Eternia Crystal on an Eternia Crystal Stand (purchased from the Tavernkeep).

How long does the Old One's Army last?

5–7 waves depending on tier

What are the rewards from the Old One's Army?

Defender Medals → Squire/Apprentice/Huntress/Monk armor sets, sentry weapons, pets.